openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#!/usr/bin/env python
import time
import struct
from panda import Panda
from hexdump import hexdump
from panda.isotp import isotp_send, isotp_recv
# 0x7e0 = Toyota
# 0x18DB33F1 for Honda?
def get_current_data_for_pid(pid):
# 01 xx = Show current data
isotp_send(panda, "\x01"+chr(pid), 0x7e0)
return isotp_recv(panda, 0x7e8)
def get_supported_pids():
ret = []
pid = 0
while 1:
supported = struct.unpack(">I", get_current_data_for_pid(pid)[2:])[0]
for i in range(1+pid, 0x21+pid):
if supported & 0x80000000:
ret.append(i)
supported <<= 1
pid += 0x20
if pid not in ret:
break
return ret
if __name__ == "__main__":
panda = Panda()
panda.set_safety_mode(Panda.SAFETY_ELM327)
panda.can_clear(0)
# 09 02 = Get VIN
isotp_send(panda, "\x09\x02", 0x7e0)
ret = isotp_recv(panda, 0x7e8)
hexdump(ret)
print "VIN: %s" % ret[2:]
# 03 = get DTCS
isotp_send(panda, "\x03", 0x7e0)
dtcs = isotp_recv(panda, 0x7e8)
print "DTCs:", dtcs[2:].encode("hex")
supported_pids = get_supported_pids()
print "Supported PIDs:",supported_pids
while 1:
speed = struct.unpack(">B", get_current_data_for_pid(13)[2:])[0] # kph
rpm = struct.unpack(">H", get_current_data_for_pid(12)[2:])[0]/4.0 # revs
throttle = struct.unpack(">B", get_current_data_for_pid(17)[2:])[0]/255.0 * 100 # percent
temp = struct.unpack(">B", get_current_data_for_pid(5)[2:])[0] - 40 # degrees C
load = struct.unpack(">B", get_current_data_for_pid(4)[2:])[0]/255.0 * 100 # percent
print "%d KPH, %d RPM, %.1f%% Throttle, %d deg C, %.1f%% load" % (speed, rpm, throttle, temp, load)
time.sleep(0.2)